.dept-update-container {
    width: 70%;
    margin: 50px auto;
    display: flex;
}

.dept-update-guide {
    width: 300px;
}

.dept-update-content {
    flex: 1;
}

.dept-update-guide-item {
    display: block;
    cursor: pointer;
    line-height: 50px;
    width: 280px;
    color: black;
    background: rgb(241, 241, 241);   
    margin: 0 auto;
    transition: 0.4s;
}

.dept-update-guide-item:hover {
    background: rgb(65, 116, 255);
    color: white;
}